1225117 has 2 divisors, whose sum is σ = 1225118. Its totient is φ = 1225116.

The previous prime is 1225111. The next prime is 1225123. The reversal of 1225117 is 7115221.

It is a balanced prime because it is at equal distance from previous prime (1225111) and next prime (1225123).

It can be written as a sum of positive squares in only one way, i.e., 881721 + 343396 = 939^2 + 586^2 .

It is an emirp because it is prime and its reverse (7115221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1225117 - 2³ = 1225109 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1225094 and 1225103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612558 + 612559.

It is an arithmetic number, because the mean of its divisors is an integer number (612559).

2^1225117 is an apocalyptic number.

It is an amenable number.

1225117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225117 is an equidigital number, since it uses as much as digits as its factorization.

1225117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 140, while the sum is 19.

The square root of 1225117 is about 1106.8500350093. The cubic root of 1225117 is about 107.0021544388.

The spelling of 1225117 in words is "one million, two hundred twenty-five thousand, one hundred seventeen".